Patents by Inventor John Chu Chen

John Chu Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090182089
    Abstract: Disclosed are golf balls having soft, resilient bimodal ionomeric covers with improved softness and scuff resistance and methods for their preparation. The soft, resilient bimodal ionomeric covers comprise at least partially neutralized mixtures of carboxylate functionalized terpolymers (molecular weight between about 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (molecular weight between about 2,000 and 30,000).
    Type: Application
    Filed: December 5, 2008
    Publication date: July 16, 2009
    Inventor: John Chu Chen
  • Publication number: 20090130355
    Abstract: Provided are partially or fully neutralized mixtures of carboxylate functionalized ethylene high copolymers or terpolymers (Mw between 80,000 and 500,000 Da) with carboxylate functionalized ethylene low copolymers (Mw between 2,000 and 30,000 Da). The compositions are used in films, multilayer structures and other articles of manufacture. The compositions are preferably used on a surface of the articles.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 21, 2009
    Inventors: John Chu Chen, Han Il Lee
  • Patent number: 7514380
    Abstract: An article comprising a selectively permeable membrane supported on a support is disclosed wherein the article has moisture vapor transmission rate of at least 1800 g/m2/24 h and the selectively permeable membrane comprises a composition comprising an organic acid-modified ionomer.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: April 7, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: John Chu Chen, Sam Louis Samuels
  • Patent number: 7504448
    Abstract: Disclosed are molded articles such as covers, mantles and cores for golf balls, one-piece thermoplastic golf balls, and heel counters and toe puffs for footwear, prepared from compositions comprising thermoplastic elastomers, thermoplastic carboxylic acid-based ionomers, thermoplastic polyurethanes and thermoset polyurethanes modified with micropulp produced from organic fibers. The compositions are tougher, stronger, and more scuff and abrasion resistant than typical ionomer compositions. Also disclosed are methods for making golf balls comprising said compositions.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: March 17, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 7488778
    Abstract: The present invention relates to compositions and preparative process of partially or fully neutralized mixtures of carboxylate functionalized ethylene high copolymers or terpolymers (Mw between 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (Mw between 2,000 and 30,000) and organic acid salts and injection or compression molded applications such as golf ball components thereof.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: February 10, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 7429624
    Abstract: Disclosed are thermoplastic compositions comprising partially or fully neutralized carboxylic acid-based ionomers modified with rosin or rosin derivatives and, optionally, organic acids and salts thereof. Methods of preparing the thermoplastic compositions are also provided. The thermoplastic compositions exhibit higher hardness and stiffness than typical ionomer compositions. Also disclosed are golf balls, sporting equipment, and other non-sport articles comprising said thermoplastic compositions and methods for their preparation.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: September 30, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 7422796
    Abstract: Disclosed are films comprising highly neutralized blends of ethylene acid copolymers, organic acid salts and ethylene containing polymers (e.g. ethylene/alkyl (meth)acrylate copolymers) and/or silicon-containing polymers to provide high oxygen permeability values (OPV). Such polymeric film and polymeric film structures have improved oxygen permeability and desirable water vapor transmission, formability, and structural strength to be useful in wrapping food products requiring breathable films such as case ready meat, fish, sausage, fresh produce, and the like.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: September 9, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Publication number: 20080176468
    Abstract: An article comprising a selectively permeable membrane supported on a support is disclosed wherein the article has moisture vapor transmission rate of at least 1800 g/m2/24 h and the selectively permeable membrane comprises a composition comprising an organic acid-modified ionomer.
    Type: Application
    Filed: August 18, 2006
    Publication date: July 24, 2008
    Inventor: John Chu Chen
  • Publication number: 20080171165
    Abstract: Disclosed are films obtained from blends of ethylene copolymers with organic acid salt-modified potassium ionomeric copolymers. The films of the present invention can be welded using RF energy.
    Type: Application
    Filed: March 20, 2008
    Publication date: July 17, 2008
    Inventors: John Chu Chen, David J. Walsh
  • Publication number: 20080160280
    Abstract: Disclosed is a multilayer film or sheet, which comprises at least one vapor barrier layer and at least one vapor transmission-adjusting layer wherein the vapor transmission-adjusting layer comprises a neutralized acid copolymer or ionomer thereof, an organic acid, and optionally other polymers, having a ratio of wet cup permeance to dry cup permeance greater than 10. The vapor barrier layer comprises ethylene polymer, propylene polymer, polyvinyl alcohol, polyamide, polyester, ethylene vinyl alcohol copolymer, polyvinylidene chloride, PVC, or combinations of two or more thereof. The film is useful as a variable vapor barrier for moisture control of buildings. Also disclosed are articles comprising the multilayer film.
    Type: Application
    Filed: December 10, 2007
    Publication date: July 3, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: John Chu Chen, Donna Lynn Visioli
  • Patent number: 7375151
    Abstract: A thermoplastic composition is provided, comprising (a) an acid copolymer, (b) a salt of a high molecular weight, monomeric organic acid; (c) a thermoplastic resin; (d) a cation source; and (e) optionally, a filler. Also provided are one-, two- and three-piece golf balls, and multi-layered golf balls comprising the composition of the invention.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: May 20, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Robert Joseph Statz, John Chu Chen, John Francis Hagman
  • Patent number: 7365116
    Abstract: Disclosed are articles of manufacture comprising ionomeric copolymers blended with organic acids or salts thereof that have a unique combination of high stiffness and resilience. Articles of manufacture according the invention include, without limitation, footwear structural components (e.g., heel counters, toe puffs, and soles), golf club components, and industrial applications (e.g., materials such as caulking materials, sealants, modifiers for cement and asphalt, coatings, packaging films, molded parts, and resilient foams for sporting goods).
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: April 29, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Publication number: 20080081710
    Abstract: A phase transition golf ball comprises a phase transition material. The phase transition material may optionally include a microwave susceptor or an induction susceptor. The phase transition material preferably comprises an ethylene acid copolymer, or an ionomer of an ethylene acid copolymer. The performance of the phase transition golf ball, for example its hardness or compression, is adjusted by inducing a complete or partial phase transition in the phase transition material. The extent of the adjustment in performance is correlated with the extent of the phase transition. Preferably, the phase transition is reversible and repeatable and takes place at temperatures that might be achieved through the use of common household appliances. Also preferably, the phase transition material returns to its original state over an extended period, for example hours or days.
    Type: Application
    Filed: October 3, 2007
    Publication date: April 3, 2008
    Inventors: John Chu Chen, Janice V. Granato, Matthew S. Hall, Peter A. Morken
  • Publication number: 20080020158
    Abstract: Disclosed are rigid or semi-rigid multilayer structures that provide high oxygen permeability values comprising metallocene polyethylene, ethylene/vinyl acetate copolymers or highly neutralized blends of ethylene acid copolymers, organic acid salts and optionally one or more ethylene-containing polymers or silicon-containing polymers. Such structures have improved oxygen permeability and are useful in packaging food products such as case ready meat, fish, sausage, fresh produce, and the like that require breathable packages.
    Type: Application
    Filed: July 19, 2006
    Publication date: January 24, 2008
    Inventor: John Chu Chen
  • Publication number: 20070283652
    Abstract: Disclosed is a variable vapor barrier for moisture control of buildings comprising or formed from a material having a moisture permeance of less than 0.1 perms (grains/h·ft2·inches of Hg) at less than 50% average humidity, such as from 10 to 50% or 20 to 40%; and a moisture permeance greater than 4, or greater than 10 perms at greater than 60% average humidity, such as from 60 to 90%, or 70 to 80%. Also disclosed are articles comprising the variable vapor barrier and methods of their use.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: John Chu Chen, Ashok Harakhlal Shah
  • Publication number: 20070287019
    Abstract: Disclosed is a composition comprising a neutralized acid copolymer or ionomer thereof, an organic acid, and optionally other polymers, having a ratio of wet cup permeance to dry cup permeance greater than 10. The composition is useful as a variable vapor barrier for moisture control of buildings. Also disclosed are articles comprising the variable vapor composition and methods of their use.
    Type: Application
    Filed: June 13, 2006
    Publication date: December 13, 2007
    Inventors: John Chu Chen, Sam Louis Samuels, Ashok Harakhlal Shah
  • Patent number: 7297739
    Abstract: This invention relates to a polymer precursor dispersion for use in making a polymer that is a solid at room temperature and further relates to a method of making same where the dispersion comprises a polymer precursor comprising an addition monomer, a condensation monomer, a prepolymer, or a polymer modifier and 0.01 to 50 weight percent of a micropulp having a volume average length of from 0.01 to 100 micrometers.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: November 20, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: John Chu Chen, Arnold Frances, Sam Louis Samuels
  • Patent number: 7273903
    Abstract: The present invention relates to compositions and preparative process of partially or fully neutralized mixtures of carboxylate functionalized ethylene high copolymers or terpolymers (Mw between 80,000 and 500,000) with carboxylate functionalized ethylene low copolymers (Mw between 2,000 and 30,000) and organic acid salts and injection or compression molded applications such as golf ball components thereof.
    Type: Grant
    Filed: April 6, 2005
    Date of Patent: September 25, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 7238737
    Abstract: Disclosed are thermoplastic compositions comprising partially or fully neutralized carboxylic acid-based ionomers modified with rosin or rosin derivatives and, optionally, organic acids and salts thereof. Methods of preparing the thermoplastic compositions are also provided. The thermoplastic compositions exhibit higher hardness and stiffness than typical ionomer compositions. Also disclosed are golf balls, sporting equipment, and other non-sport articles comprising said thermoplastic compositions and methods for their preparation.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: July 3, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen
  • Patent number: 7144958
    Abstract: Disclosed are molded articles such as covers, mantles and cores for golf balls, one-piece thermoplastic golf balls, and heel counters and toe puffs for footwear, prepared from compositions comprising thermoplastic elastomers, thermoplastic carboxylic acid-based ionomers, thermoplastic polyurethanes and thermoset polyurethanes modified with micropulp produced from organic fibers. The compositions are tougher, stronger, and more scuff and abrasion resistant than typical ionomer compositions. Also disclosed are methods for making golf balls comprising said compositions.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: December 5, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: John Chu Chen